Russian peasant algorithm

RussianPeasant.java

 public class RussianPeasant {
 
 public Static int product(int a, int b){
        int x = a;
        int y = b;
        int z = 0;
        
        while(x > 0){
            if(x%2 == 1) z += y;
            x = x >> 1;
            y = y << 1;
        }
        
        return z;
    }
    
 }